Wind noise only with TC installed.

I did not get it with either truck, but I do have the in-channel window visors on both trucks. Usually the noise is from wind intrusion front to rear that does not happen without the camper. There are number of old threads on this and it seemed to happen more on suicide extended cab doors than on crew style setups.

I'm surprised yours is noisy with that mega cab. Check your top door seals and try the rope trick.